From: "Douglas A. Seifert" <doug@...>
Date: 2008-07-21T07:04:34+09:00
Subject: Re: XML parser

Phlip wrote:
>
> But I don't know the Ruby SAX solution!
>
REXML supports a "SAX Like" stream listening interface as well as DOM.  
See the REXML tutorial at 
http://www.germane-software.com/software/rexml/docs/tutorial.html, 
scroll down until you see the section headed with "Stream Parsing".  The 
upshot is you write a class that has callback methods (see 
http://www.germane-software.com/software/rexml/doc/classes/REXML/StreamListener.html 
for a complete list of callbacks) and pass an instance of the class to 
REXML's parse_stream method.  REXML also supports a SAX2 API, but I have 
never used it.  Look for the heading "SAX2 Stream Parsing" in the 
tutorial link above.

Recently converted a poor DOM based parsing solution to a stream 
listener based solution (not SAX2) and realized an order of magnitude 
improvement in performance.

Saludos,

-Doug